Alert archive / Ohio / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 296

May 18, 199738 counties in Ohio; 11 counties in Pennsylvania; Brooke County, Hancock County, Ohio County, West Virginia

The Storm Prediction Center issued this severe thunderstorm watch at May 18, 1997, 3:45 PM EDT for 38 counties in Ohio; 11 counties in Pennsylvania; Brooke County, Hancock County, Ohio County, West Virginia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 18, 1997, 3:45 PM EDT (19:45 UTC)
Expired
May 18, 1997, 10:00 PM EDT
In force
6 hr
Issued by
the Storm Prediction Center
All 52 counties

Ashland County, OH, Ashtabula County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Delaware County, OH, Erie County, OH, Franklin County, OH, Geauga County, OH, Guernsey County, OH, Harrison County, OH, Holmes County, OH, Huron County, OH, Jefferson County, OH, Knox County, OH, Lake County, OH, Licking County, OH, Lorain County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Morrow County, OH, Muskingum County, OH, Ottawa County, OH, Portage County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Wayne County, OH, Wyandot County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Crawford County, PA, Erie County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Ohio County, WV

The radar

The Cleveland radar (KCLE), 24 km from the middle of the area, began a volume at 19:47 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Warnings issued inside it

28 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 18, 3:45 PM EDTSevere Thunderstorm WarningCLEKnox30 min
May 18, 4:08 PM EDTSevere Thunderstorm WarningCLESandusky67 min
May 18, 4:12 PM EDTTornado WarningCLEMarion, Morrow48 min
May 18, 4:34 PM EDTSevere Thunderstorm WarningCLECrawford, Richland56 min
May 18, 4:38 PM EDTSevere Thunderstorm WarningPBZBelmont52 min
May 18, 4:44 PM EDTSevere Thunderstorm WarningCLELorain46 min
May 18, 4:48 PM EDTSevere Thunderstorm WarningCLEHuron42 min
May 18, 5:00 PM EDTSevere Thunderstorm WarningCLEStark45 min
May 18, 5:03 PM EDTSevere Thunderstorm WarningCLEAshland57 min
May 18, 5:08 PM EDTTornado WarningCLEAshland, Richland67 min
May 18, 5:19 PM EDTSevere Thunderstorm WarningPBZWashington41 min
May 18, 5:20 PM EDTSevere Thunderstorm WarningCLEWayne55 min
May 18, 5:27 PM EDTSevere Thunderstorm WarningCLELorain33 min
May 18, 5:32 PM EDTSevere Thunderstorm WarningILNMadison, Union28 min
May 18, 5:44 PM EDTSevere Thunderstorm WarningILNDelaware46 min
May 18, 5:50 PM EDTSevere Thunderstorm WarningCLEMarion, Morrow40 min
May 18, 5:51 PM EDTSevere Thunderstorm WarningPBZColumbiana69 min
May 18, 5:52 PM EDTSevere Thunderstorm WarningCLERichland53 min
May 18, 5:56 PM EDTSevere Thunderstorm WarningCLEHolmes49 min
May 18, 6:07 PM EDTSevere Thunderstorm WarningCLEStark38 min
May 18, 6:07 PM EDTSevere Thunderstorm WarningILNFranklin38 min
May 18, 6:13 PM EDTSevere Thunderstorm WarningPBZCarroll, Tuscarawas62 min
May 18, 6:24 PM EDTSevere Thunderstorm WarningCLEKnox36 min
May 18, 6:26 PM EDTSevere Thunderstorm WarningILNFairfield, Licking34 min
May 18, 6:42 PM EDTSevere Thunderstorm WarningPBZCoshocton63 min
May 18, 7:15 PM EDTSevere Thunderstorm WarningPBZCarroll30 min
May 18, 7:49 PM EDTSevere Thunderstorm WarningPBZJefferson26 min
May 18, 8:33 PM EDTSevere Thunderstorm WarningPBZAllegheny, Washington27 min

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 7.8 hours before the alert went out and 168 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 1997-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 1997-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 448 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
820 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
448 m²/s²
0-3 km storm-relative helicity
540 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 18, 2:30 PM EDTSevere Thunderstorm WatchSPCAllen, Auglaize, Champaign, Clark, Darke, Defiance and 14 more6 hr

Nearby

Severe Thunderstorm Watches in Ohio, 1997Severe Thunderstorm Watches in Pennsylvania, 1997Severe Thunderstorm Watches in West Virginia, 1997Every severe thunderstorm watch in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.